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Lipoxygenase Metabolism: Critical Pathways in Microglia-mediated Neuroinflammation and Neurodevelopmental Disorders
Shuli Chen1, Haidong Zou2,3,4,5
1Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, No.100 Haining Road, Shanghai, 200080, China.
Abstract:
As innate immune cells of the central nervous system (CNS), microglia are involved in the physiological processes of the CNS, including neural development and maintenance of homeostasis, and in the occurrence and development of most CNS diseases. Lipoxygenases (LOXs) are a family of non-heme, iron-containing enzymes that generate lipid mediators that regulate cellular inflammation by catalyzing the oxidation of polyunsaturated fatty acids. Many previous studies have demonstrated the indispensable role of the LOX pathway in microglia-mediated neuroinflammation, especially the 5-LOX and 12/15-LOX pathways. Emerging evidence indicates that the LOX pathway is also implicated in physiological processes, such as synaptic pruning and synaptic phagocytosis mediated by microglia, and that deficiency can contribute to neurodevelopmental disorders. The present review summarizes the impact of the LOX pathway on microglia-related physiological and pathological processes in the CNS and describes the potential for inhibition of the LOX pathway as a future strategy for the treatment of CNS diseases.
Insights
The lipoxygenase (LOX) pathway significantly impacts microglia's role in both healthy brain functions like neural development and in diseases. Inhibiting the LOX pathway offers a promising therapeutic strategy for central nervous system (CNS) disorders.
Area of Science:
- Neuroscience
- Immunology
- Biochemistry
Background:
- Microglia are key innate immune cells in the central nervous system (CNS), vital for neural development, homeostasis, and CNS diseases.
- Lipoxygenases (LOXs) are enzymes that produce lipid mediators regulating inflammation via polyunsaturated fatty acid oxidation.
- The 5-LOX and 12/15-LOX pathways are crucial in microglia-driven neuroinflammation.
Purpose of the Study:
- To review the role of the lipoxygenase (LOX) pathway in microglia-mediated physiological and pathological CNS processes.
- To explore the implications of the LOX pathway in neurodevelopmental disorders.
- To discuss the therapeutic potential of LOX pathway inhibition for CNS diseases.
Main Methods:
- Literature review of studies on microglia, lipoxygenases, and CNS function/disease.
- Analysis of research linking LOX pathways to neuroinflammation and neurodevelopment.
- Synthesis of evidence regarding therapeutic strategies targeting the LOX pathway.
Main Results:
- The LOX pathway is involved in essential microglial functions, including synaptic pruning and phagocytosis.
- Dysregulation of the LOX pathway is associated with neurodevelopmental disorders.
- LOX pathway activity is critical for microglia-mediated neuroinflammation.
Conclusions:
- The LOX pathway plays a dual role in the CNS, influencing both physiological processes and disease pathogenesis.
- Targeting the LOX pathway presents a viable therapeutic avenue for various central nervous system disorders.
- Further research into LOX pathway modulation could yield novel treatments for neurological conditions.
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